Which component allows single selection from a list?

Which component allows single selection from a list?

• A. Checkbox
• B. Radio Button
• C. Dropdown
• D. Entry-Point Module

Answer: (B)

When you want a user to choose exactly one option from a set, the radio button component is designed for that. Radio buttons appear as a group of options, and only one option in the group can be selected at a time. Selecting one automatically clears any other chosen option in the same group, making the choice mutually exclusive. This setup is ideal for presenting all available options at once so the user can compare and decide quickly. A checkbox allows multiple selections, so it isn’t appropriate for a single-choice requirement. A dropdown enforces a single selection as well, but it hides the list until the user opens it, which doesn’t match the idea of selecting from a visible list of options. An Entry-Point Module isn’t a user input control for making a selection from a list.

When you want a user to choose exactly one option from a set, the radio button component is designed for that. Radio buttons appear as a group of options, and only one option in the group can be selected at a time. Selecting one automatically clears any other chosen option in the same group, making the choice mutually exclusive. This setup is ideal for presenting all available options at once so the user can compare and decide quickly.

A checkbox allows multiple selections, so it isn’t appropriate for a single-choice requirement. A dropdown enforces a single selection as well, but it hides the list until the user opens it, which doesn’t match the idea of selecting from a visible list of options. An Entry-Point Module isn’t a user input control for making a selection from a list.